Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> adb2ddb077d7f08d19a5b65f42907ed30754e8e16af489b0fcf823b7b17617ac:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^